4. At 25 °C, 1.0 g of caffeine will dissolve in 47 mL of water, in 8.1 mL of chloroform, in 86 mL of benzene, or in 370 mL of diethyl ether. Calculate the solubility (in grams/100 mL) of caffeine in these four solvents. Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?

4. At 25 °C, 1.0 g of caffeine will dissolve in 47 mL of water, in 8.1 mL of chloroform, in 86 mL of benzene, or in 370 mL of diethyl ether. Calculate the solubility (in grams/100 mL) of caffeine in these four solvents. Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter66: The Synthesis Of Natural Products: The Sex Attractant Of The Cockroach And Camphor

Section: Chapter Questions

Problem 3Q

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substance of mass 10 g is dissolved in 50 mL of water. Calculate the total mass of sample that can be extracted into 40 mL of ether, if the ether is used in two 20 mL portions .The partition coefficient(k)of the substance between petroleum ether and water is give 4
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